What if mitochondria were originally Archaeans?

I've been trying to figure out, like many scientists, exactly where life originated from. It has led to one burning question for the moment, that I feel compelled to find an answer or discussion about: what if the earliest mitochondria were Archaeans that developed near thermal vents in the deep ocean?

Consider this: life began as a series of chemical reactions. Small bacteria, which began gathering in abundance in the newly condensed oceans, used photosynthesis to capture electrons directly from solar energy. This is an almost direct energy conversion and is ideal for any self-sufficient living organism.

These bacteria produce oxygen and, through decay of their inorganic material after death, phosphorous. The abundant hydrogen, oxygen, carbon and nitrogen within the water at this time began producing the raw organic and inorganic compounds necessary to create life: acids (like essential amino acids), lipids (and phospholipids), sugars (ribose and glucose), and proteins (like enzymes and even RNA itself).

I only recently began looking into Archaeans, but from what I can gather they, along with bacteria, are the first and simplest forms of life, and are naturally produced within the rich water.

This brings me to my point. All of this occurs before the first known ice age, which means solar energy, bacteria, and raw material are at an all-time high. Millions of tiny, filamentous bacterium coat the surface of the ocean floor, producing oxygen and sedimentary waste through natural reactive processes.

This sedimentary waste, rich in PO4, reacts with natural lipids to create phospholipid filaments that coat the ocean floor and begin collecting loose ribose sugars, pyruvic acid, and NADs. As the three components come together and are bound phospholipid material, they react to produce phenomena such as nucleotides, which link with the other ribose sugars and raw components -- bound by phospholipid filaments -- to produce a specific chain of amino acids called a protein.

One of these first proteins is raw ribonucleic acid, which acts as a prototype for even newer proteins such as adenosine triphosphate and the first RNA polymerases.

Now BOOM! The first known ice age. As the temperature of the water cools, the oceans grow much deeper in relatively short time as the excess water vapor in the atmosphere is condensed. Between this greater depth, the biological cloud of organisms in the early ocean, and thick ice, solar energy becomes scarce and bacteria may no longer survive through photosynthesis.

Without photosynthesis, the oxygen content of the water depletes. Bacteria and Archaeans, now faced with extinction on an individual level, join forces for the first time to produce mitochondrial bacteria -- or bacteria that may metabolize inorgnanic solids in addition to photosynthesis, depending on the need.

This new bacteria-mitochondria pair, still only considered a bacteria, paves the way for complex life by producing the first RNA, DNA, and proteins shared between two individual lifeforms. Thousands upon thousands of configurations occur naturally, while only the strongest and healthiest organisms and relationships prevail into successive generations.

I can't help but think... what if? What if the rest of the prototype organelles or structures within the cell were created as Archaeans or bacteria through "random" chemical reactions, were merely useful to other bacteria, and devoured to continue working within the membrane of the bacteria?

In this way, life truly becomes dog-eat-dog: the first stages of evolution occur when bacteria begins cannibalizing itself for energy. Basically.

Anyway, I'd just like a second opinion. For all I know this is common knowledge and/or has been proven otherwise outright, but the origins of life always seem to flabbergast scientists and I haven't yet read anything on this possibility.

What do you think?

PS: I only recently began studying this subject in any intensive detail (say, within the past 12-24 hours), so forgive me if my knowledge of chemical processes or the nature of bacteria/Archaeans is skewed or completely wrong.